splice site distribution (for introns >= 4bp)
gc-ag:  33.33% (n=1)
gt-ag:  66.67% (n=2)

donor site distribution (for introns >= 4bp)
gc:  33.33% (n=1)
gt:  66.67% (n=2)

acceptor site distribution (for introns >= 4bp)
ag: 100.00% (n=3)
